CPC H03H 7/0115 (2013.01) [H01P 5/227 (2013.01)] | 16 Claims |
1. A quadrature hybrid comprising:
a first port;
a second port;
a third port;
a fourth port;
first, second, and third inductors;
first, second, third, and fourth capacitors; and
a first variable capacitor tuning network connected between the first port and the fourth port;
a second variable capacitor tuning network connected between the second port and the third port; and
wherein:
the first and second capacitors are coupled in series between the first port and the fourth port, with a first intermediate node between the first and second capacitors;
the third and fourth capacitors are coupled in series between the second port and the third port, with a second intermediate node between the third and fourth capacitors;
the first inductor is coupled between the first port and the second port;
the second inductor is coupled between the first intermediate node and the second intermediate node; and
the third inductor is coupled between the fourth port and the third port.
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